[Q] Note 2 not working wi-fi and BT - Galaxy Note II Q&A, Help & Troubleshooting

Hello guys, ill have this problem after night, no changes for phone etc as update or reset havent been done, i don't realy know what happend, just wifi and BT not even turning on, it freez, then turning back to OFF mode and try turn on and so 10 minutes allredy, any body know sollution for that? try make hw reset, nothing changes same problem left.
GT-N7100
android 4.1.1
firmware n7100XXALIH

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when turning mda3 on backlight is working but the screen not

just get a mda3 with a problem
sometimes when i switching the phone on (power button) the backlight is working but the screen remains black so i can't se anything. the phone is working, i can browse the folders, i hear all the sounds but the screen remains black! after a while hes working again.
does anybody had the same problem? and how can i solve the problem?((((
have u tried a hard reset? ive never had this problem so i dont know, tho i guess if u sync with pc and save all all your wanted files and do a hard reset, it may sort it.
i've already tried hard reset, rom updating etc...
the problem is still there...((
i've switch "turn off the phone after 3 minutes" off, maybe it would help...
because problem was appearing most of the time if device was lying for 10-20 minutes without working...
update: nope, it's still black(
Think you have a bad device. A problem that is know is that the backlight will turn itself of (but you can still see the screen). This is some times the case with mine and I have the 1.40 rom, however I have had this problem with other roms so it must be some software that I use.
i'm also thinking so...
now i noticed that if you turn the device on and get a black screen, if you wait a minute he will switch the screen on. but why?

[Q] cannot turn on Wi-Fi

Hellow to everybody! Sorry for my bad English.
I cannot turn on Wi-Fi and Wi-Fi router on my DHD. The phone just types "error" and nothing happens.
One day before, there was a bug: I turned the sound off and put my DHD into the bag. After one hour, i found my phone turned off. I tried to turn it on but the device only made 3 "vibrates" and LED indicator started to blink and that's all! I put off the battery, inserted it back - nothing helped me. So at the end i just put battery off for one hour and after that DHD turned on. Next day, when i needed wi-fi i found that i can't turn it on.
What i have tried: changed Roms, restored from backups, changed radio to the last version - nothing helped me. But one or 2 times after rebooting wi-fi router strated working for 1 time i.e. when i turned it off, i cannot turn it on again.
please help!
Hate to say it, but it sounds an awful lot like my DHD before I sent it off for repair. After having WiFi off for a few days, it gave me Error when I tried turning it on. Bluetooth and hotspot dead as well, along with volume up button. Tried a few other custom ROMs and 1.32 RUU and nothing worked. Sent it back and got it back, now everything is working again. All I can see in repair status, is a software update to official Gingerbread, but I doubt that was all they did. Good luck with your DHD mate, I think it needs a pit stop, like mine did :-(
I can only agree with that! Sorry m8
Thanks guys, tomorrow i'll try to send it to service center )

Galaxy S3 Wifi Issues

Hi
I got a used galaxy S3 for cheap, but wifi was not working on it. Turns out it was the antenna cable inside the phone, so I replaced that part, but it still didnt work. I downgraded the software from 4.1.1 to 4.0.4 (via ODIN), and wifi worked, so I left the phone alone for a few hours. Then I started using the phone and downloaded a few apps then all of a sudden wifi stopped working, and the phone won't connect anymore. Tried rebooting, reflashing, going to *#0011# and turned off wifi power saving mode, but still didnt work. WHen I enable wifi or bluetooth, the I/O switch gets greyed out and it just says "Turning On..." . Anyone know what the issue is? Could it be a hardware problem (wouldnt think so because it worked for a bit).
thanks!
No one has experienced this problem on their phones?
madmajd said:
No one has experienced this problem on their phones?
Click to expand...
Click to collapse
Kernel issue. WiFi drives are built into the kernel. Flash anoher stock kernel if your on stock or flash aosp kernel if not on stock
madmajd said:
Hi
I got a used galaxy S3 for cheap, but wifi was not working on it. Turns out it was the antenna cable inside the phone, so I replaced that part, but it still didnt work. I downgraded the software from 4.1.1 to 4.0.4 (via ODIN), and wifi worked, so I left the phone alone for a few hours. Then I started using the phone and downloaded a few apps then all of a sudden wifi stopped working, and the phone won't connect anymore. Tried rebooting, reflashing, going to *#0011# and turned off wifi power saving mode, but still didnt work. WHen I enable wifi or bluetooth, the I/O switch gets greyed out and it just says "Turning On..." . Anyone know what the issue is? Could it be a hardware problem (wouldnt think so because it worked for a bit).
thanks!
Click to expand...
Click to collapse
I'm experiencing similar trouble with my s3 the wifi never turns on. I've only started having this issue since I got a factory reset done because of some other trouble and now I'm sick with this new issue.
Did you find anyway to fix it yet. 923

Wifi turn off and on without actually connetting to the wlan

Hello folks,
I have a critical problem with my Galaxy N5100 wifi+3g.
I updated it to the 4.2.2 version of android. after several time I charged it for a long night and when I turned it on it was not possible to connennt to a wlan anymore. the system turn the wifi radio on and off automatically.
Has anybody of you experienced the same problem?
So guys,
bobody else is experiencing this problem? I have also tryied to reset the device to the initial factory settings, but the problem still hold.
It is very annoying.

Samsung Galaxy A3 2017 (320F) (WiFi, Bluetooth, battery life, restarting)

Hello. I have Samsung Galaxy A3 2017 and have a few issues with it. First thing is battery life. After upgrading from Android 7 to Android 8, battery life significantly decreased! I even know the reason why it is happening (it decreases on standby mode. If you will remove SIM card or go to the Airplane mode, battery life is great) Probably many of you know about this issue? - Do you know how to fix this?
Another problems started about an year ago. Firstly, we were not able to turn on WiFi. This is also known issue on Lineage OS as I know, but this phone is still running its original Android 8. After few months, we could not turn on Bluetooth as well. After that, I tried a factory reset and that is when things got worse! After factory reset, phone was still not able to turn on WiFi and Bluetooth and plus it was restarting over and over again. During these restarts, you can not turn off your phone. If you will push the Power off button, it will simply restart the device. After a long time it stops restarting and you are able to turn it off, but Wif and Bluetooth are still not working. If you will turn off phone then it still starts restarting again and again. Now I have noticed that it shows antenna when there is no SIM card in it. Even signal strength is changing. Of course if I am trying to call or go to the settings, it says that there is no SIM card inside.
Please, could you help me to solve any of these problems? I have cleared partitions, made factory reset few times, wrote latest firmware for this model using Odin but none of them fixed anything.
Can I downgrade to Nougat? or should I try some custom ROM? If yes, which one?

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